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Antennas : 30M
  • A 30 Meter Sloping Dipole Antenna - This variation of the basic horizontal, half wavelength flat top dipole has proven to be a simple, effective antenna suitable for both home and portable use.
    [ Hits: 452 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Postage Stamp 40 Meter Wire Dipole Antenna - Build yourself a postage stamp 40 meter wire dipole antenna that fits in a space a little over 20 wide and works reasonably well at low heights
    [ Hits: 2765 | Votes: 5 | Rating: 6.5 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • The Ugly MacGyver 6 meter J-pole Antenna - Essentially, a J-pole is a 1/2 wave resonant antenna connected to a quarter wave matching stub. The feedline is connected at a point on the matching stub that is at the feedline's characteristic impedance. The result is 3/4 of a wavelength on one side and 1/4 wavelength on the other side.
    [ Hits: 202 | Votes: 0 | Rating: 0 ]
Antennas : CobWeb
  • The Morse Sagas: Cobweb Antennas - Useful tips on building cobweb antennas. Since I've done so many posts on the Cobweb antennas I thought it best to separate them on a different page so that potential Cobweb builders can see all the posts together. Hopefully this will make planning and building easier.
    [ Hits: 269 | Votes: 1 | Rating: 10 ]
Antennas : HexBeam
  • History of the Hexbeam Antennas - The original HEXBEAM was developed by Mike Traffic, N1HXA, in the early nineties. It is true that an M over W configured yagi antenna that resembled a butterfly was earlier tried successfully. But the advanced electrical design, the characteristic nesting concept and central terminal post that enable the multi band functionality along with the basic hardware design were all developed by Mike Traffie.
    [ Hits: 129 | Votes: 2 | Rating: 7.5 ]
Antennas : Magnetic Loop
  • K8NDS Magnetic Loops - Fractional Wave Loops antennas are a sort of magnetic loop antennas that differs in several aspects from the standard ones. Author is now SK however in his page he posted several examples and interesting links
    [ Hits: 161 | Votes: 0 | Rating: 0 ]
Antennas : Resonant Feedline Dipole Antennas : Rhombic
  • K0UO Rhombix Antenna Farm The Ground - Modeling an antenna over real terrain gives you a visual picture of how terrain impacts performance. You can use a model to determine optimum height for antennas on an existing tower, Compare different tower locations for performance, Compare different sites for performance
    [ Hits: 143 | Votes: 1 | Rating: 10 ]
Antennas : Satellite Internet and Radio : Social Networks
  • Amateur Radio Social Network - Radio amateur social network. Here, a radio amateur can spend time together and profitably. Share interesting information or learn something new. Post photos or videos. Can create a live broadcast and go on ether, create your own page, magazine or group. And many other possibilities.
    [ Hits: 132 | Votes: 0 | Rating: 0 ]
Operating Modes : Mobile
  • VE6AB Mobile Ops - Description of a fully equipped mobile command post
    [ Hits: 517 | Votes: 0 | Rating: 0 ]
  • Mobile Command Post - A fully equipped amateur radio mobile radio shack by VE6AB
    [ Hits: 847 | Votes: 0 | Rating: 0 ]
Operating Modes : Portable Operations
  • PD Powerbank for SOTA Radios - This post describes how the newish Power Delivery (PD) mode mobile powerbanks can be used to power a SOTA transceiver as well as keeping your other hiking devices charged.
    [ Hits: 144 | Votes: 0 | Rating: 0 ]
Propagation : Solar Cycle
  • The Next Sunspot Cycle - Waiting For The Next Sunspot Cycle 2019-2030, how will be the next solay cycle and when it will begin
    [ Hits: 485 | Votes: 4 | Rating: 6.75 ]
Radio Equipment : HF Amplifiers : Acom 1010
  • Acom 1010 Vs Acom 1011 - Forum post on differences between the Acom 1010 (single 4CX800) and Acom 1011 (Two 4CX250B)
    [ Hits: 467 | Votes: 4 | Rating: 6 ]
Shortwave Radio : SWL Resources
  • Milcom Monitoring Post - A blog dedicated to military communications shortwave intercepts, sponsored by the Teak Publishing
    [ Hits: 270 | Votes: 2 | Rating: 8.5 ]
Technical Reference : Antenna Rotator
  • Yaesu G-450XL Rotator Problem - An old usenet posting about the Azimuth Indicator Problem of the popular Yaesu G-450XL Rotator
    [ Hits: 358 | Votes: 3 | Rating: 6 ]
Technical Reference : Coax Cables and Connectors Technical Reference : QRP Projects
  • HF1 QRP Transceiver Project - This project is based around the recent HF1 QRP transceiver by Ashhar Farhan, VU2ESE. The transceiver is an interesting SSB design with wide tuning range from 0-30MHz and should cover several amateur bands. The schematic for the transceiver can be found on the Minima mail list in this post with a PDF attachment
    [ Hits: 670 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi
  • Sending and receiving Laser CW signals with a Raspberry Pi - Sending and receiving text with Morse code light pulses across the room is a fun and cheap project you can do on a Raspberry Pi or Arduino or any other microcontroller. This post explains how I did it, and how you can do it too.
    [ Hits: 290 | Votes: 0 | Rating: 0 ]

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